Bridgestone Corporation

Yuuki Hara

Eiichi Suzuki

Takanao Shoji

When tires of a vehicle equipped with two front tires and four rear tires are to be replaced, a life amount L, which serves as an indicator for tire replacement, is grasped for the front and rear tires of a plurality of vehicles that are to be tire replacement targets. After extracting, from among the plurality of vehicles, a vehicle &#x3b1; equipped with the rear tires having a life amount of (&#x2153;) L and a vehicle &#xdf; equipped with the rear tires having a life amount of 0, the rear tires of the vehicle &#xdf; are replaced with the front tires of the vehicle &#x3b1; and the front tires of the vehicle &#xdf;, and new tires are fitted to the vehicle &#x3b1; and the vehicle &#xdf; as the front tires of the vehicle &#x3b1; and the front tires of the vehicle &#xdf;.

Tire replacement method and tire replacement instruction device

The present invention provides a system for measuring slip rate of a tire for a construction vehicle, which system makes it possible to select based on a quantitative estimation a tire species that is the most advantageous in terms of wear resisting period among plural types of tire species having the same TKPH value and a method of selecting a tire tread pattern for a construction vehicle using the system. The systemfor measuring slip rate of a tire for a construction vehicle includes a running position sensormounted in a construction vehicle, for continuously acquiring data of running position of the construction vehicle, a slip rate sensorfor continuously acquiring data of slip rate for at least one tire mounted on the construction vehicle, a memoryfor storing data acquired by these sensors, and a calculation portionfor calculating based on the data stored in the memorya slip rate distribution in which the slip rate range is divided into predetermined range sections and frequency ratios of the slip rates, measured in dry conditions at respective spots on a predetermined travelling path preset such that the construction vehicle runs, are plotted in the corresponding range sections.

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Tokyo, Japan

Yuuki Hara